package personal.controller;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import personal.controller.media.ImageHandler;

/**
 *
 * @author LocNguyen
 */
@WebServlet(name = "SiteController", urlPatterns = {"/SiteController"})
public class SiteController extends HttpServlet {
    private ImageHandler imgHandler = new ImageHandler();
    
    public SiteController() {
    }
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        
        // An command look likd: media_get_image
        // This mean: this command should be deliver
        // to media controller with cmd: get_image
        String cmd = request.getParameter("cmd");
        String handler = cmd.substring(0, cmd.indexOf('_'));
        cmd = cmd.substring(cmd.indexOf('_')+1, cmd.length());
        try {
            if (handler.equalsIgnoreCase(CONTROL_ID.MEDIA.value)) {
                imgHandler.controlRequest(cmd, request, response);
            } else if(handler.equalsIgnoreCase("")) {
                // Other controller
            }
        } finally {            
            out.close();
        }
    }
    
    
    
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    enum CONTROL_ID {
        MEDIA("media");
        
        String value;
        CONTROL_ID(String value) {
            this.value = value;
        }
    };

}
